Mixing-valve.



EDWARD MADDEN, 0F AMSTERDAM, NEW' YORK.

MIXING-VALVE.

Application filed April 21, 1913.

To all whom t may concern Be it known that I, EDWARD MADDEN, a citizen of the United States, residing at Amsterdam, county of Montgomery, and State of New York, have invented certain new and useful Improvements in Mixing- Valves, of which the following is a specification.

The invention relates to such improvements and consists of the novel construction and combination of parts hereinafter described and subsequently claimed.

.Reference may be had to the accompanying drawings, and the reference characters marked thereon, which form a part of this speciiication. Similar characters refer to similar parts in the several figures therein.

Figure 1 of the drawings is a -top plan view of my improved gas-mixing valve. Fig. 2 is a central vertical section of the same taken on the broken line 2 2 in Fig. 1. F ig. 3 is a. horizontal cross-section of the same taken on the broken line 3-3 in Fig. 2.

The principal object of the invention is to provide in simple and compact form a valve for mixing with a flowing body of gas, an accurately measured quantity of another gas.

Referring to the drawings wherein the invention is shown in preferred form, 1, is a hollow valve-plug forming a ground joint with a valve-case, 2, which valve-case is mounted within a mixing-chamber 3.

The mixing-chamber is provided with an inlet, 4, and an outlet, 5, whereby a supply of gas can be caused to flow through the mixing-chamber, such supply being drawn from the atmosphere or being under control of suitable valves or otherwise not illustrated.

The valve-case, 2, may be mounted within the mixing-chamber,'3, in any known manner, being preferably integral with the mixing-chamber or brazed thereto so as to be in effect integral therewith. The valve-case, 2, is provided with a laterally-opening port, 6, with which a laterally-opening port, 7, in the valve-plug is adapted to register when the valve is open.

The ports, 6 and 7, are preferably formed by rectangular transversely elongated slots in the valve-oase and plug respectively, whereby the outflow therethrough can be accurately regulated in proportion to the degree to which the valve plug is rotated relatively to the valve case 2.

Specification of Letters Patent.

Patented Nov. '7, 1916.

Serial No. 762,449.

The port 6 is relatively long and narrow and is arranged transverse to the longitudinal axis of the valve-case. It extends for a considerable proportion of the circumference of the valve-case and is preferably on that side of the valve-case which is away from the inlet opening 4, and is in line between the openings land 5. Gas emitted therefrom is accordingly directed in a wide flaring thin jet into the mixing chamber and against the walls thereof and is thus caused to more quickly and intimately combine with the gas from the opening 4. rlhe walls of the chamber in line with this jet are rounded, in fact, substantially the entire inner wall surface of the chamber is preferably rounded and the chamber may be described as a spherical chamber, so as to produce a swirling effect upon the gas as the gas is driven thereagainst. yIhe opening 7 in the valve plug is preferably made to correspond with the opening 6 in the valveoase as illustrated.

The plug carries an index, 8, whereby the relative movement of the parts is indicated on a graduated scale, 9, on the top of the mixing-chamber. The valve-plug is shown provided with a polygonal head, 10, adapted to receive a wrench or similar device to operate the valve plug. The valve-plug is drawn to its seat within the valve-case by means of a nut, 11, and an interposed washer 12.

A pipe, 13, leading from a supply of another gas, under pressure if desired is coupled onto the smaller end of the valve-plug in communication with the hollow interior of the plug.

4 In operating the device, a body of gas is caused to flow through the mixing-chamber from the inlet, 4, to the outlet, 5, while at the same Atime the valve is more or less opened to permit gas from the pipe, 13, to pass in the desired quantity out through the ports, 6 and 7, into the mixing-chamber to there intermix with the gas flowing therethrough.

By properly proportioning the openings -7, each graduation on the scale 9 bears a given relation to the openings 4-5 and indicates a given quality of mixture. Substantial accuracy and uniformity of mixture may thus be maintained.

Vhile I have described this valve as being employed for mixing gases and the like, it is however clearly apparent that the valve IOS may be used equally well for mixing liquids or other material or materials according to the size and proportions of the valve. Granular or powdered materials may be as readily mixed as liquids, etc.

In case the material from opening l is admitted under pressure, it may not be necessary in seme instances to supply the material through pipe 13 under pressure, as the material from lpipe 13 may be injected in `consequence of the tendency to a vacuum produced by the passing material between openings 4 and 5, as is the principle of or dinary injectors. In case the material in pipe 13 1s supplied under pressure, then the material from opening a may or may not be supplied under pressure for the same reason.

as just stated.

As many changes could be made in this construction without departing fro-m the scope of the following claims, it is intended that all matter contained in the above description, or shown in the accompanying drawings shall be interpreted as illustrative only and not in a limiting sense.

That I claim as new and desire to secure by Letters Patent is- 1.y A mixing device comprising a mixing chamber having an inlet and an outlet opening, a valve-case within the mixing chamber, a hollow valve plug within the valve-case having portions projecting from opposite sides thereof, one of said portions comprising operating means, and the other of said aortions havinO' an opening therethrough Y communicating with the hollow of said valve plug, and said valve plug having an aperture through its wall communicating with the hollow thereof and adapted to register with an aperture in the valve-cas within the mixing chamber. Y

2. A mixing device comprising a mixing chamber having an inlet and anoutlet opening, a valve-case within the mixing chamber, a hollow valve plug within the valve-case having portions projecting from opposite sides thereof, one of said portions comprising operating means, and the other of said portions having an opening therethrough communicating with the hollow of said valve plug, and said valve plug having an aperture through its wall communicating with the hollow thereof and adapted to register with an aperture in the valve-case within the mixing chamber, and an indi-Y cator for-indicating the relative positions of the apertures in the valve plug and valvecase.

3. A mixing device comprising a mixing chamber having inlet and outlet openings, a valve-case within the mixing chamber, a hollow valve plug within the valve-case having portions projecting from opposite sides thereof, one of said portionshaving a supply opening therethrough communicating Ywith the hollow of the valve plug, the Valve plug having an aperture through its wall communicating with the hollow thereof and adapted to register with an aperture in the valve-case, and the other projecting portion of said valve plug having an indicator thereon for indicating the relative positions of the aperture through said valve plug and through said valve-case. Y Y

al. A mixing device comprising a mixing chamber having inlet and outletV openings, a valve-case within said mixing chamber, a rotatable valve plug within said. valve-case, the valve-case having an aperture therethrough relatively longer than wide, the valve plug having an opening for registering with said aperture inthe casing and having means for supplying material to be mixed to said opening, and said mixing chamber being spherical.

5. A mixing device comprising a mixing chamber having inlet and outlet openings,

a member projecting into said mixing chamber for supplying material to be mixed with material in said mixing chamber, said member having a substantially cylindrical part formed with a slot-like opening through the wall thereof extending for a considerable portion of its circumference through which the material to be mixed is directed vtoward a portion of the walls of the mixing chamber, and said portion vof said wallsbeing rounded.

G. A mixing device comprising a spherical mixing chamber having inlet and outletV openings through diametrically opposite walls thereof, a valve extending centrally through said chamber being substantially cylindrical andV having discharge opening facing toward said outlet opening, said dis-V charge opening being slot-like and having its length transverse to the length of the valve case, and means for supplying material to be mixed to said discharge opening.

In testimony whereof, I have hereunto set my hand this 12th day of April, 1913.

Y VEDWARDMannen.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. C. 

